US4619650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasma bags
Assignee: Bayer Corp
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Filing: 1985-04-09
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Granted: 1986-10-28
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Expires: 2005-04-09
Abstract
Abstract A plasma transfer bag for containing plasma, the bag having a line of weakness extending from the top to the bottom of the bag, the bag being made from two sheets of translucent flexible material which is flexible at -40° C., the sheets being welded together around the edges and across the bottom to provide plasma containment means, the sheets extending from the bottom weld to form an extension having a break therein, the bag may be held and pulled transversely to enable the bag to be torn from the break to the top of the bag along the line of weakness.
Inventors
- 👤 Leonard A. Wisdom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:42
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/05; A61J1/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
156 words
A plasma transfer bag of flexible sterilizable material, the bag having two side walls and being closed at the base, the bag having an extension to the base for gripping or holding the bag, the extension flap having a break therein extending to the base of the bag, the bag having a line of weakness in the walls extending from the break to the top of the bag, the bag on each side of the line of weakness being reinforced by means of a weld adjacent the base and extending no more than about 10% of the length of the line of weakness from the base of the bag, the weld adapted to control tearing of the bag from the base to the top of the bag when opposing forces are applied to the extension in a transverse direction parallel to the base of the bag to cause the bag to split and eject the contents.
Claim 2
Dependent Claim
156 words
A plasma transfer bag of flexible sterilizable material, the bag having two side walls and being closed at the base, the bag having an extension to the base for gripping or holding the bag, the extension flap having a break therein extending to the base of the bag, the bag having a line of weakness in the walls extending from the break to the top of the bag, the bag on each side of the line of weakness being reinforced by means of a weld adjacent the base and extending no more than about 10% of the length of the line of weakness from the base of the bag, the weld adapted to control tearing of the bag from the base to the top of the bag when opposing forces are applied to the extension in a transverse direction parallel to the base of the bag to cause the bag to split and eject the contents.
Claim 3
Dependent Claim
18 words
A plasma transfer bag as claimed in claim 1 which is made of material flexible at -40° C.
Claim 4
Dependent Claim
22 words
A plasma transfer bag as claimed in claim 1 or claim 2 in which the material is selected from polyethylene and polyvinylchloride.
Claim 5
Dependent Claim
20 words
A plasma transfer bag as claimed in any one of the preceding claims wherein the break is a V-shaped notch.
Claim 6
Dependent Claim
38 words
A plasma transfer bag as claimed in any one of claims 1 to 3 wherein the break is an elliptical hole in the extension between the closed bottom of the bag and the bottom of the extension flap.
Claim 7
Dependent Claim
146 words
A plasma transfer bag for containing plasma, the bag having a line of weakness extending from the top to the base of the bag, the bag on each side of the line of weakness having a reinforcing weld adjacent the base of the bag and extending no more than about 10% of the length of the line of weakness from the base of the bag, the bag being made from two sheets of flexible material which is flexible at -40° C., the sheets being welded together around the edges and across the bottom to provide plasma containment means, the sheets extending from the bottom weld to form an extension flap having a break therein, by which extension the bag may be held and pulled transversely to enable the bag to be torn from the break to the top of the bag along the line of weakness.
Claim 8
Dependent Claim
146 words
A plasma transfer bag for containing plasma, the bag having a line of weakness extending from the top to the base of the bag, the bag on each side of the line of weakness having a reinforcing weld adjacent the base of the bag and extending no more than about 10% of the length of the line of weakness from the base of the bag, the bag being made from two sheets of flexible material which is flexible at -40° C., the sheets being welded together around the edges and across the bottom to provide plasma containment means, the sheets extending from the bottom weld to form an extension flap having a break therein, by which extension the bag may be held and pulled transversely to enable the bag to be torn from the break to the top of the bag along the line of weakness.
Claim 9
Dependent Claim
20 words
A plasma transfer bag as claimed in claim 6 wherein the break is a V-shaped notch in the extension flap.
Claim 10
Dependent Claim
23 words
A plasma transfer bag as claimed in claim 6 or claim 7 wherein the break is an elliptical hole in the extension flap.
Claim 11
Dependent Claim
35 words
A plasma transfer bag as claimed in any one of claims 6 to 8 wherein the walls of the bag are reinforced by means of a weld on each side of the line of weakness.
Claim 12
Dependent Claim
28 words
A plasma transfer bag as claimed in claim 9 wherein each weld extends no more than 10% of the length of the line of weakness of the bag.
References Cited (Backward Citations)
GB1147846A
Cited
US3692493A
Cited
GB1518392A
Cited
US4278198A
Cited
US4174040A
Cited
EP0076062A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-27 | 1990-04-28 | 1990-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-27 | 1994-04-28 | 1994-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-27 | 1998-04-28 | 1998-10-28 | $7700.00 | Window Closed / Lapsed |